1: Buy propeller guards. No matter how good a drone pilot you are, they will save your butt, other people and the property your flying in. No shame in using them for safety.
2: Set RTH when connection is lost to "Hover". You don't want it flying 60 feet throw the roof because that's the lowest you can set RTH as minimum height.
3: Always start of at the lowest point in the room. Since the
M2P flying indoor is only relying on it's ground sensor, it acting strange if you start at a counter top and then fly out over the floor or a staircase. Start of the floor even in a large room, then manurer up to where you want to film.
4: Start in P mode - once off the floor, switch immediately to T ( Tripod) mode. That will limit movement in any direction to 3 m/s and thereby avoiding catastrophe if you by mistake press the sticks full down. Remember the
M2P is quite a powerful drone.
5: If it's very tight spaces you will have to switch off the obstetrical avoidance completely. But know by doing so, you are in full control - no help from the drone.
6: Walls, furniture and other obstetrical will influence (drift) your craft because of the turbulence from your own propellers. Stay as much as possible away from them and minimum 3 feet off the floor and cournes in the room.